已知θ∈(0,π/2)且满足关系logtanθ cosθ=3/2 求logcsc^2θ(sinθ*cosθ)的值.
已知θ∈(0,π/2)且满足关系logtanθ cosθ=3/2 求logcsc^2θ(sinθ*cosθ)的值.
已知θ∈(0,π/2),且满足关系logtanθCOSθ=2/3,求logcsc^2θ(sinθ*cosθ)的值
已知θ∈(0,π/2),且满足关系logtanθCOSθ=3/2 求logcsc^2θ(sinθ*cosθ)的值.
已知2sinθ+3cosθ=2,求sinθ+cosθ的值
已知tanθ=3,求(3cosθ-5sin^2θcosθ)/sin(π-θ)的值
已知锐角θ满足sin(πcosθ)=cos(πsinθ) 求sin2θ的值?
急求已知根号3sinθ-sin(π/2-2θ)/cos(π+θ)×cosθ=1 θ ∈(0,π) 求θ的值
已知θ∈(-π/2,0),cosθ=13,求sinθ+cos(θ-π/4)的值
已知向量m=(cosθ,-sinθ),n=(根号2+sinθ,cosθ),θ∈(π,3π/2),且cos(θ/2+π/8
已知(4sinθ-2cosθ)/(3sinθ+5cosθ)=6/11,求5cos^2θ/(sin^2θ+2sinθcos
θ∈(0,π/2),比较cosθ、sin(cosθ)、cos(sinθ)的大小
已知sinθ-2cosθ=0,求sin2θ-cos2θ/sinθ*cosθ 的值